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3 years ago

Multiply (7.7 × 10^6)(7 × 10^5). Express the result in scientific notation.

Mathematics

2 answers:

FromTheMoon [43]3 years ago

7 0

The scientific notation for 5390000000000 = 5.39 x 10^12

Katarina [22]3 years ago

5 0

Answer:

5.39 × 10¹²

Explanation:

Multiply the coefficients.

7.7 × 7 = 53.9

===============

Multiply the exponential terms.

When you multiply exponential terms, you <em>add the exponent</em>s.

10⁵ × 10⁶ = 10⁽⁵⁺⁶⁾ = 10¹¹

10⁵ × 10⁶ = 10¹¹

===============

Multiply the products of the coefficients and the exponential terms.

Product = 53.9 × 10¹¹

However, the answer is <em>not in standard form</em>. It should have only one digit before the decimal point.

Product = 53.9 × 10¹¹ Multiply by 10/10

Product = 53.9 × 10¹¹ × 10/10 Distribute the 10s

Product = (53.9/10) × (10¹¹ × 10)

Product = 5.39 × 10¹²

===============

A scientific calculator does the operation for you automatically. The buttons may have different labels on your calculator, but the key sequence is usually something like

7.7 Exp 6 × 7 Exp 5 = 5.39 × 10¹²

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The diameter of a circle is 3 ft. Find its area to the nearest tenth.

tatiyna

Answer:

A= 7.07ft squared

Step-by-step explanation:

6 0

2 years ago

Which ordered pairs make the open sentence true? 3x+y<14 Select all the correct answers. (7, −7) (−1, 6) (3, 6) (4, −1) (6, 0

Jet001 [13]

Answer:

(4, - 1)

(-1, 6)

Step-by-step explanation:

Given the expression :

3x+y<14

Test the opprions to find out the true statement.

(7, - 7)

3(7) + (-7) < 14

21 - 7 < 14

15 < 14 (not true)

(-1, 6)

3(-1) + 6 < 14

3 + 6 < 14

9 < 14 ( true)

(3, 6)

3(3) + 6 < 14

9 + 6 < 14 ( not true)

(4, - 1)

3(4) - 1 < 14

12 - 1 < 14 ( true)

(6,0)

3(6) + 0 < 14

18 < 14 ( not true)

4 0

3 years ago

ANSWER BOTH QUESTIONS FOR BRAINLIEST TY :)

Alchen [17]

Answer:

<h2>Angle X; 39</h2><h2>Angle Y; 129</h2>

Step-by-step explanation:

180-90

This gives us the measurement of 51+x.

90-51

This is x as well as the angle that is across from it.

x+90=y

39+90=129

y=129.

to find the last angle, we add 90 to 51. This gives us 141.

So, now we add up all of the angles to double check everything. If they all add up to 360 then we are correct.

39+39+51+90+141=

360.

This means that we have solved everything correctly and that these are the correct answers.

I know that this is really confusing but the answers that you need are at the top so hopefully this helped!

4 0

3 years ago

Read 2 more answers

Mitch used 1 4 pounds of beef to make 3 4 liters of beef strogonoff. If Mitch's recipe is for 1 liter of beef strogonoff, how ma

iren [92.7K]

option B) 3 pounds of beef is needed to make 6 times the recipe.

<u>Step-by-step explanation</u>:

<u>step 1 </u>:

Mitch used 14 pounds of beef = 34 liters of beef strogonoff

'x' pounds of beef = 1 liter of beef strogonoff

<u>step 2</u> :

Rate = No. of pounds / No. of liters

(14 pounds / 34 liters) = (x pounds / 1 liter)

x = 14/34

x = 0.412

1 liter of beef strogonoff = 0.412 pounds of beef

<u>step 3</u> :

To make 6 times the recipe = 6 $\times$ 0.412

= 2.5 pounds of beef ( approximately 3 pounds)

5 0

3 years ago

I have a small question what is this-

Cerrena [4.2K]

Answer:

Step-by-step explanation:

negative 5 is less then -3 is the statement. so saying that -3 is less than five, is false.

remember your number line.

-5_-4_-3_-2_-1_0_1_2_3_4_5_6

five sure is to the left of three, and saying that three is to the right of five is the exact same thing.

8 0

3 years ago